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Urban density is a concept used in urban planning, urban studies, and related fields to describe the intensity of people, jobs, housing units, total floor area of buildings, or some other measure of human occupation, activity, and development across a defined unit of area.
Clarifying Duany's second criticism in reference to "lot coverage": If localities seek to regulate density through floor area ratio, the logical consequence is to encourage expansive one story building with less green space, as single story construction is less expensive than multi-story construction on a per square foot basis.
During the 1950s and early 1960s, architects did not follow a unified style, but they did share a blind confidence in modern architecture's capacity to improve the public realm. Such general optimism encouraged planning bureaucracies to employ a tabula rasa in modern cities that called for clearing areas of high urban density , often deemed ...
Its goal is to increase density by creating compact and complete towns and neighborhoods. The 10 principles of new urbanism are walkability, connectivity, mixed-use and diversity, mixed housing, quality architecture and urban design, traditional neighborhood structure, increased density, smart transportation, sustainability, and quality of life.
In the U.S. most medium-density or middle-sized housing was built between the 1870s and 1940s [10] due to the need to provide denser housing near jobs. Examples include the streetcar suburbs of Boston which included more two-family and triple-decker homes than single-family homes, [10] or areas like Brooklyn, Baltimore, Washington D.C. or Philadelphia [10] which feature an abundance of row-houses.
Urban density refers to how many people live in a square mile of land. [9] It is used as a variable in evaluating how livable a city design is. The optimal urban density for compact cities is high enough to keep residents close to community amenities but low enough to allow residents access to green spaces, reasonable privacy, and acceptable views.
For the same reason, setbacks may also be used in lower density districts to limit the height of perimeter walls above which a building must have a pitched roof or be set back before rising to the permitted height. [5] In many cities, building setbacks add value to the interior real estate adjacent to the setback by creating usable exterior spaces.
The lower density and better corrosion resistance of aluminium alloys and tin sometimes overcome their greater cost. Copper is a valued building material because of its advantageous properties (see: Copper in architecture). These include corrosion resistance, durability, low thermal movement, light weight, radio frequency shielding, lightning ...